设X~N(μ,4),Y~N(μ,9),a=P{Xμ-2},b=P{Yμ+3},则/ananas/latex/p/1237/ananas/latex/p/990
举一反三
- 设X和Y为随机变量,且P{X0,Y0}=,则P{min(X,Y)<0}=/ananas/latex/p/990/ananas/latex/p/990/ananas/latex/p/36622
- 若X~N(),且E(X)=5,D(X)=4,则= ,=/ananas/latex/p/310942/ananas/latex/p/200/ananas/latex/p/297
- 若随机变量XN(u,),则P(X>a)=1-P(Xa)/ananas/latex/p/173/ananas/latex/p/3922/ananas/latex/p/1237
- 设L是圆周x=acost, y=asint (),则/ananas/latex/p/21409/ananas/latex/p/2330162
- 设方程确定y关于x的函数,则___________或___________/ananas/latex/p/128518/ananas/latex/p/1227187